MIL-STD-1168C
The single alpha code reflects the month of the year in which the manufacture, assembly, or regrouping of the lot was initiated. Once initiated the lot number shall keep the same month code until the lot is completed. The month of production is the start of the manufacturing activity's operations and not the dates of the sub-component manufacture. There are no spaces between the year of production code, the month of production code and the lot interfix number. A change in the month of production does not necessitate the lot interfix number or the lot sequence number to revert to "001." Unless otherwise specified (see 6.5) and as applicable, date calculations, such as expiration date or shelf life, shall be calculated from the date of manufacture indicated in the lot number and expire on the last day of the month in the designated year. The applicable lot(s) shall not be accepted if the month of production is incorrectly applied.
4.4 Ammunition lot number - interfix number.
4.4.1 Lot interfix number description. Each ammunition lot number commencing with the first lot produced or assembled shall have an interfix number consisting of three (3) digits. The interfix number will usually start with "001" and continue through "999." Lot interfixes are used to maintain traceability of any significant changes during production. Types of changes include administrative, manufacturing, and configuration changes. The interfix number "000" is reserved for experimental and reference lots only (see 4.7.2 and 4.7.7).
4.4.2 Correctness of interfix numbers. Correctness of the initial interfix number(s) assignment shall be verified with the master data card repository (such as WARP) of the procuring activity prior to production (see 6.10 and 6.19). The applicable lot(s) shall not be accepted if the interfix number is incorrectly applied. Guidance on the applicable functional specialists for interfix issues is provided in 6.10.
4.4.3 Interfix sequences. In most instances, assignment of interfix numbers for an
item will be in numerical sequence. The interfix number will usually start with "001" and continue through "999." A standard variation to sequential assignment of interfix numbers is the block of interfix number methodology described in 4.4.3.1. Other interfix sequence exceptions may be permitted (see 6.10.c). Reuse of interfix numbers, such as starting over at "001" in the event the "999" interfix number is reached, by the same manufacturing activity for the same item shall not be allowed unless authorized (see
6.10.c). This shall be annotated on the ADC. (See 4.10 and 4.11 for the WARP data card repository information.)
4.4.3.1 Blocks of interfix numbers. In some cases interfix numbers are not assigned sequentially but are instead assigned in "blocks of interfix numbers." This primarily occurs when manufacturing activities: produce "items of a similar nature"; produce the same ammunition item on parallel production lines; or produce items that could easily be confused with each other. The "block of interfix" numbering methodology helps prevent duplication of lot numbers, allows for simplified identification by field users, and helps to avoid use of the wrong type of ammunition in
certain given situations. Blocks of interfix numbers may be assigned to "010's", "020's",
14
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business